Provide one bit of gossip spoken about Gatsby by one of his guests.

He is rumored to have been a German spy, a murderer, as well as a past Oxford University student.

Explanation:

The rumor is that Gatsby had once killed a man and doesn't want anyone to turn him in for it; this is supposedly why he is overly generous with everyone. With few facts to back her case, Lucille then pipes up that Gatsby was rumored to have been a German spy during the war. Later, Jordan tells Nick that he once confessed he had attended Oxford University; however, Jordan tells Nick that she doesn't believe Gatsby told her the truth.